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Article for Polska Federacja Ornitologiczna 
THE SECRET WORLD OF CASSOWARY 
Habitat Studies
 

Reconstruption of Tropical Rainforests is very difficult for Megafauna in Europe. Some efforts have done to evolving indoor exhibits for large mammals like okapi or pygmy hippopotamus, but almost never for cassowary so this fantastic animal is often displayed like a common bird in a simple paddock without reminder elements of its extraordinary habitat.
The biologist Joan Bentrupperbäumer has done an incredible study in situ about cassowaries in early 1990th. Alone and without great equipment he spent three years in the National Parks of North Queensland to observe this extraordinary species. He worked in “free-contact” with this so dangerous animals to collect more and more informations about their habits in wild. He published a majestic work divided in four sections about cassowaries for James Cook University in 1997. He dedicated a special section to habitat characteristics like landform, vegetation and climate in his studies. He established five different biomes for Double-wattled cassowary (Casuarius casuarius) in North Queensland based on landform patterns, and major floral themes and structural formations. “The primary distinction was between rainforest and non-rainforest vegetation based on descriptions used by Walker and Hopkins (1984)”.  While rainforest was a singular, non-rainforest were subdivided in four different biomes like woodlands, swamp forests, beach/foreshore forests and mangrove forests. The following contents are an overview of vegetation in five biomes by Joan Bentrupperbäumer.


 

 

Non-rainforest Vegetation
•    Beach/Foreshore
High-stratum: Calophyllum inophyllum, Terminalia arenicola, Terminalia catapa, Terminalia muelleri. Mid-stratum: Casuarina equisetifolia. Low-stratum: Scaevola sericea, Fenzlia spp, Ipommea spp, Vigna marina
•    Woodland
High-stratum: Eucalyptus tessellaris, Acacia mangium, Terminalia spp, Polyscias australiana, Morinda citrofolia, Randa fitzalanii, Xanthophyllum octandrum, Melaleuca leucadendron. Low-stratum: Alyxia spicata, Smilax australis, passiflora spp, invasive Calamus spp. 
•    Swamp
High-stratum:  Archontophonex alexandrae, Pandanus spp, Melaleuca leucadendron, Melaleuca quinquenervia, Acmena hemilampra, Endiandra montana. Mid-stratum: Elaeocarpus eumundi, Dillenia alata. Low-stratum: Cordyline terminalis, Hydristelle wendlandiana
•    Mangrove
Several varieties of mangrove species e.g. Rhizophora spp and Brugureia spp
Rainforest Vegetation
•    Rainforest (Vine forest)
Syzygium alliligneum, Syzygium cormiflorum, Syzygium forte, Castanospeemum austral, Planchonella spp, Cryptocarya spp, Palaquium galactoxylum, Myristica insipida, Lepidozamia hopei, Calamus spp.

 

 

You cannot forget the first time that have seen a Cassowary at zoo. This prehistoric creature is one of most impressive birds that you can meet.
A lot of European collections have this large bird, so all three extant species are kept in zoos  with several subspecies recognized.
While Double-wattled cassowary (Casuarius casuarius) is fairly common and monitored in a studybook (ESB), instead Single-wattled cassowary (Casuarius unappendiculatus) and Dwarf cassowary (Casuarius bennetti) are very rare in Europe. The last is hold only at Walsrode WeltVogelPark in Germany. Richard Perron, one of the major experts about, has suggested the subspecies Westermann’s cassowary (Casuarius bennetti westermanni) like distinct species (Casuarius westermanni), this possibility is being examined.
Cassowaries are the biggest birds native from Tropical Rainforests.  Like tapirs, pygmy hippo, okapi, great apes or Sumatran tiger, also Cassowaries are ambassadors of “Rainforests Megafauna” so they become an of most representative animals for public of zoos. 


 

 

So across biomes and several flora species the habitat for Cassowary in North Queensland can become a good example for zoos. Other considerations were done by Joan Bentrupperbäumer about climate. Data were collected for Tully and from these it is apparent “tropical and seasonal with distinguishable hot and cool, wet and dry season”.
Also Richard Perron published some contents about habitat of cassowaries particularly for elevation. Casuarius casuarius occurs up to 500 m, Casuarius unappendiculatus up to 1000 m and Casuarius bennetti up to 3500 m (Coates 1985; Beehler et al.1986). 
So we examine the montane habitat of Dwarf cassowary (Casuarius bennetti). Several phytogeographical studies have been conducted during the end of 19th century and the early of 20th around the Arfak Mountains in the Bird’s Head Peninsula in the Province of West Papua. 
More than 320 birds and many species of plants have been recognized in this area. 15 endemic birds species have been observed like  the Vogelkop Bowerbird (Amblyornis inornatus) with its formidable so-called 'roofed maypole' bowers, the rare Long-tailed Paradigalla (Paradigalla carunculata), easily overlooked when not vocalizing, the beautiful and little-known Arfak Astrapia (Astrapia nigra), and the violently enrapturing Western Parotia (Parotia sefilata). 


 

 

List of endemic bird-species in Arfak Mountains
 

•    White-striped Forest Rail (Rallicula leucospila)
•    Papuan Lorikeet (Charmosyna papou)
•    Arfak Catbird (Ailuroedus arfakianus)
•    Vogelkop Bowerbird (Amblyornis inornatus)
•    Western Smoky Honeyeater (Melipotes gymnops)
•    Vogelkop Melidectes (Melidectes leucostephes)
•    Vogelkop Scrubwren (Aethomyias rufescens)
•    Vogelkop Whistler (Pachycephala meyeri)
•    Long-tailed Paradigalla (Paradigalla carunculata)
•    Arfak Astrapia (Astrapia nigra)
•    Western Parotia (Parotia sefilata)
•    Crescent-caped Lophorina (Lophorina niedda)
•    Ashy Robin (Heteromyias albispecularis)
•    Grey-banded Munia (Lonchura vana) 

 

 

A lot of scientists like Wallace, D’Albertis, Beccari, Pratt, St.Vraz and Van Oosterzee have studied and discovered the secrets of these incredible territories. Results from studies a vegetation and similar to Kinabalu Mountains in Borneo above 2100 m (Gibbs, 1917), in particular several species of coniferous trees were recognized Phyllocladus, Podocarpus, Dacrydium and Libocedrus… also Dendrobium and Burmannia disticha have been observed. Basin of Anggi Lakes (over 2100 m altitude) vegetation reminds to Fiji Islands in its beautiful moos-flora and wealth of creeping orchids (Gibbs, 1917). Rhododendron laetum is native to the Anggi Lakes area. A lot of herbaceous plants of genus Cladonia have been observed on Koebrè Mountain over 2700 m. Single-wattled cassowary (Casuarius unappendiculatus) lives also in Arfak Mountains but at lower altitude.
Some elements to create a good habitat for this species are mentioned, but it’s clearly difficult to do the same in captivity. More than 70 public collections held Cassowary in Europe but the potentiality and value of this species is not often express. A lot of zoos display it like a not interesting species without learning and naturalistic reconstructions. I’ve decided to study and write this article to focus the importance of this animal into its habitat. Then you can do the same for furthermore species that you don’t believe…and discover more more and more about…
Regards to Polska Federacja Ornitologiczna and Ptaki hobby’s readers.


 

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Double-wattled cassowary (Casuarius casuarius) at Parco Natura Viva

Article for Polska Federacja Ornitologiczna 
by Stefano Capomagi

 
You can find it in polish
on the magazine "Ptaki hobby"
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